diff --git a/ChangeLog b/ChangeLog index f2ed7542d..c641bf8a2 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,18 @@ +2007-11-03 Marco Gerards + + * term/i386/pc/vga_text.c: Include . + (CRTC_ADDR_PORT): New macro. + (CRTC_DATA_PORT): Likewise. + (CRTC_CURSOR): Likewise. + (CRTC_CURSOR_ADDR_HIGH): Likewise. + (CRTC_CURSOR_ADDR_LOW): Likewise. + (update_cursor): New function. + (grub_console_real_putchar): Call `update_cursor'. + (grub_console_gotoxy): Likewise. + (grub_console_cls): Set the default color when clearing the + screen. + (grub_console_setcursor): Implemented. + 2007-11-03 Marco Gerards * disk/ata.c (grub_ata_pio_read): Don't wait for the command to diff --git a/term/i386/pc/vga_text.c b/term/i386/pc/vga_text.c index 684b2ac6e..7ef3b0de9 100644 --- a/term/i386/pc/vga_text.c +++ b/term/i386/pc/vga_text.c @@ -17,6 +17,7 @@ */ #include +#include #include #define COLS 80 @@ -26,6 +27,13 @@ static int grub_curr_x, grub_curr_y; #define VGA_TEXT_SCREEN 0xb8000 +#define CRTC_ADDR_PORT 0x3D4 +#define CRTC_DATA_PORT 0x3D5 + +#define CRTC_CURSOR 0x0a +#define CRTC_CURSOR_ADDR_HIGH 0x0e +#define CRTC_CURSOR_ADDR_LOW 0x0f + static void screen_write_char (int x, int y, short c) { @@ -38,6 +46,16 @@ screen_read_char (int x, int y) return ((short *) VGA_TEXT_SCREEN)[y * COLS + x]; } +static void +update_cursor (void) +{ + unsigned int pos = grub_curr_y * COLS + grub_curr_x; + grub_outb (CRTC_CURSOR_ADDR_HIGH, CRTC_ADDR_PORT); + grub_outb (pos >> 8, CRTC_DATA_PORT); + grub_outb (CRTC_CURSOR_ADDR_LOW, CRTC_ADDR_PORT); + grub_outb (pos & 0xFF, CRTC_DATA_PORT); +} + static void inc_y () { @@ -78,9 +96,12 @@ grub_console_real_putchar (int c) grub_curr_x = 0; break; default: - screen_write_char (grub_curr_x, grub_curr_y, c | (grub_console_cur_color << 8)); + screen_write_char (grub_curr_x, + grub_curr_y, c | (grub_console_cur_color << 8)); inc_x (); } + + update_cursor (); } grub_uint16_t @@ -94,6 +115,7 @@ grub_console_gotoxy (grub_uint8_t x, grub_uint8_t y) { grub_curr_x = x; grub_curr_y = y; + update_cursor (); } void @@ -101,11 +123,14 @@ grub_console_cls () { int i; for (i = 0; i < ROWS * COLS; i++) - ((short *) VGA_TEXT_SCREEN)[i] = ' '; + ((short *) VGA_TEXT_SCREEN)[i] = ' ' | (grub_console_cur_color << 8); } void -grub_console_setcursor (int on __attribute__ ((unused))) +grub_console_setcursor (int on) { - /* Not implemented. */ + grub_uint8_t old; + grub_outb (CRTC_CURSOR, CRTC_ADDR_PORT); + old = grub_inb (CRTC_DATA_PORT); + grub_outb ((old & ~(on << 5)), CRTC_DATA_PORT); }